Extrusive rock:- Igneous rock that forms from lava on Earths surface Intrusive rock:-Igneous rock that forms when magma hardens beneath Earths surface Porphyritic texture:-An igneous rock texture in which large crystals are scattered on a background of much smaller crystals
Outline
Introduction
Think that you are on a spacecraft in 1.B.C.E
You are going to see the earth
You will see the green and blue earth which scientist cannot see it today.
Scientists would see volcanoes and like marshmallows which is getting heated
5.2 Igneous rocks
Vocabulary
Extrusive rock:- Igneous rock that forms from lava on Earths surfaceIntrusive rock:-Igneous rock that forms when magma hardens beneath Earths surface
Porphyritic texture:-An igneous rock texture in which large crystals are scattered on a background of much smaller crystals
Outline
Introduction
Characteristics of Igneous Rock